The 2017 Autumnal Equinox, explained

The leaves have already started to change, pumpkin spice everything is for sale, and Halloween candy is up for grabs - it's almost fall. Friday, it becomes official.

At 4:02 p.m., the sun is pointed directly at the equator, equally splitting the amount of sunlight for each side of the earth. It's called the autumnal (fall/autum) equinox and officially brings on fall.

Tell that to Starbucks and the weather. It's going to be mid 80s this week.

Let's move on. The Earth rotates around the sun, we know that, and it also sits at a 23.5 degree angle. As we move through fall, the angle tilts the northern hemisphere farther away from the sun, hence the cooler temperatures.

On Friday, the angle won't be tilting either direction and the sun hits both hemispheres equally.

It continues to tilt away from the sun until the winter solstice on December 21 when the Earth starts back in the other direction.

Also, you CAN stand an egg on its end Friday at 4:02 p.m. - but also any other day of the year. Here's how.